Because I was experiencing lots of problems with ubuntu 9.04, I format my computer and install ubuntu 8.04. Then I upgraded to ubuntu 8.10. At first, the streaming video was not working so I followed this HOW TO and it solved the problem.

https://help.ubuntu.com/community/Re...llationMethods

When I am logged as administrator, Streaming video in firefox works fine, but it does not work when I am logged as another users. It does not seem to load anything or do anything. It only shows black screen or even does not show anythibg.

Here is what I tried:

Openning firefox for each an every users, then edit->preference and to the apllication tab. I reproduced my administrator configuration of application tab for every user. Restart firefox, restart session and reboot computer. does not work!!!!

Giving other user administrator acess, does not work.

reinstall real player, flashplugin nonfree, adobe flashplugin, ubuntu restricted extras, gstreamer,..... does not work

I s there anyone to help me???